3rd mission race:
     During  the  3rd  mission race use Dimetrover, because Dimetrover
has  the best handling for this course. You have to finish in at least
3rd place on the last lap to qualify.

Easy Dinobreakers  
     During  the game, while playing the 1st mission chose Motoraptor.
Finish the 1st mission 3 or 4 times to have enough to get the last two
Dinobreakers.